E0C63P466
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ROM, RAM
The E0C63P466 employs a Flash EEPROM for the internal ROM. The Flash EEPROM can be rewritten up to 10
times. Rewriting data is done at the user's own risk.
The following table lists the internal memory size of each model.
Memory
Code ROM
Data RAM
Data ROM
Display RAM
E0C63P466
16K
×
13 bits
5,120
×
4 bits
2K
×
4 bits
1,020
×
4 bits
E0C63454
4K
×
13 bits
1,024
×
4 bits
2K
×
4 bits
680
×
4 bits
E0C63458
8K
×
13 bits
5,120
×
4 bits
2K
×
4 bits
1,020
×
4 bits
E0C63466
16K
×
13 bits
1,792
×
4 bits
2K
×
4 bits
1,020
×
4 bits
The code ROM and data ROM of the E0C63P466 is a Flash EEPROM and can be rewritten using the exclusive
PROM writer. The size is set according to the largest model among the E0C63454, E0C63458 and E0C63466.
When developing an application for the E0C634xx Series mask ROM model, pay attention to the memory size.
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Input/Output Ports and LCD Driver
The configuration of the input/output ports and LCD driver is the same as those of the E0C63466. The following
table lists the configuration of each model.
Port
Input (K) port
Output (R) port
I/O (P) port
LCD driver
E0C63P466
8 bits
12 bits
12 bits
60 SEG
×
17 COM
E0C63454
4 bits
4 bits
8 bits
40 SEG
×
17 COM
E0C63458
8 bits
12 bits
12 bits
60 SEG
×
17 COM
E0C63466
8 bits
12 bits
12 bits
60 SEG
×
17 COM
Note that the E0C63454 supports only one system of the external input interrupt since the input port is configured
with 4 bits (K00–K03). Refer to the "E0C63454 Technical Manual" for details.
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Oscillation Circuit
The E0C63P466 has two oscillation circuits built-in: OSC1 generates a low-speed clock and OSC3 generates a
high-speed clock.
In the E0C63454, E0C63458 and E0C63466, the OSC1 and OSC3 oscillation circuits operate with the internal
regulated voltage V
D1
, note, however, the OSC3 oscillation circuit in the E0C63P466 operates with the supply
voltage V
DD
. Therefore, the oscillation characteristics of the E0C63P466 are different from those of the mask
ROM model (E0C634xx). When using the E0C63P466 as a development tool for the mask ROM model, the
constant of the OSC3 oscillation circuit must be decided according to the characteristics of the mask ROM model.
Also the OSC1 oscillation circuit of the E0C63P466 has differences in its production process from the mask ROM
models. The constant must be decided according to the characteristics of the mask ROM model.
The following table lists the configuration of the oscillation circuits for each model.
Oscillation circuit
OSC1
OSC3
E0C63P466
E0C63454
E0C63458
E0C63466
32.768kHz crystal
32.768kHz crystal
32.768kHz crystal
32.768kHz crystal
—
60kHz (Typ.) CR
60kHz (Typ.) CR
60kHz (Typ.) CR
—
1.8MHz (Typ.) CR
1.8MHz (Typ.) CR
1.8MHz (Typ.) CR
4.1MHz (Max.) ceramic 4.1MHz (Max.) ceramic 4.1MHz (Max.) ceramic 4.1MHz (Max.) ceramic
∗
In the mask ROM models, either crystal or CR can be selected for the OSC1 oscillation circuit by mask option
and either CR or ceramic can be selected for the OSC3 oscillation circuit.
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SEIKO [ SEIKO EPSON CORPORATION ]
